Background: The effects of parent-based interventions on adolescent alcohol use are unclear, including what factors moderate intervention effects. This study examines the effects of parent-based interventions on adolescent alcohol use and whethe[...]

Objective: A small body of evidence supports targeting adolescents who are heavy users of cannabis with brief interventions, yet more research is needed to confirm the effectiveness of these studies. We conducted a secondary analysis of our Peer[...]

Background: In recent decades a range of advocacy organisations have emerged on the drugs policy landscape seeking to shape the development of policy at national and international levels. This development has been facilitated by the expansion of[...]

Objective: To describe and compare the perceptions of the general population about the harmful effects of electronic cigarettes (e-cigarettes) on users and on those passively exposed to e-cigarettes and the perceptions about e-cigarette usefulne[...]

Review question: We aimed to find out if personalised advice to reduce heavy drinking provided using a computer or mobile device is better than nothing or printed information. We also compared advice provided using a computer or mobile device to[...]

Background: Cannabis is the most common illicit drug in the world. Demand by cannabis users for treatment has been increasing in most regions of the world. Currently there are nomedications specifically for the treatment of cannabis use. This re[...]

Aims: To estimate linear time-trends in substance use and primary prevention variables in adolescents in Iceland from 1997 to 2014.
Design: Repeated, cross-sectional population-based school surveys with seven waves of pooled data.
Setting: Ic[...]

Background: Substance use has detrimental short-term and long-term consequences for young people. Positive youth development (PYD) interventions, which favour promotion of positive assets over traditional risk reduction, have received attention [...]

A systematic review of primary prevention was conducted for cannabis use outcomes in youth and young adults. The aim of the review was to develop a comprehensive understanding of prevention programming by assessing universal, targeted, uni-modal[...]